Interplay of Crystal Field Structures with f2 Configuration to Heavy Fermions

• Kusunose Hiroaki

  Department of Physics, Tohoku University

• Ikeda Hiroaki

  Department of Physics, Kyoto University

Bibliographic Information

Other Title

• Interplay of Crystal Field Structures with<i>f</i>²Configuration to Heavy Fermions

Abstract

We examine a relevance between characteristic of crystal field structures and heavily renormalized quasiparticle states in the f⁰–f¹–f² Anderson lattice model. Using a slave-boson mean-field approximation, we find that for f² configurations two or three quasiparticle bands are formed near the Fermi level depending on the number of the relevant f¹ orbitals in the f² crystal field ground state. The inter-orbital correlations characterizing the crystal field ground state closely reflect in inter-band residual interactions among quasiparticles. Particularly in the case of a singlet crystal field ground state, resulting residual antiferromagnetic exchange interactions among the quasiparticles lead to an anomalous suppression of the quasiparticle contribution of the spin susceptibility, even though the quasiparticle mass is strongly enhanced.

Journal

• Journal of the Physical Society of Japan

  Journal of the Physical Society of Japan 74 (1), 405-411, 2005

  THE PHYSICAL SOCIETY OF JAPAN

Keywords

• U-based heavy fermion
• Pr-based filled skutterudite
• crystalline electric field
• slave boson

Details

• CRID: 1390001204187149952
• NII Article ID: 110001979385
• NII Article ID: 210000105821
• NII Article ID: 130004538908
• NII Book ID: AA00704814
• DOI: 10.1143/jpsj.74.405
• BIBCODE: 2005JPSJ...74..405K
• ISSN: 13474073
• ISSN: 00319015
• NDL BIB ID: 7218458
• Web Site: http://id.ndl.go.jp/bib/7218458
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I7218458
• Web Site: https://journals.jps.jp/doi/pdf/10.1143/JPSJ.74.405
• Text Lang: en
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed